Help me find the umph in my 360
K
With low compression you do not want a long cam with a bunch of overlap bleeding off what you do have. My INTENT was offering how to check valve to piston clearance to verify if a shorter duration higher lift cam can be installed. This could build more cylinder pressure at lower RPM to get some snap in the engine.
How old am I? Well probably as old or older than you. Been around cars all my life and learned a few things over the years. And smartass posts that do not try to offer assistance do no good.
Overlap does not "bleed off" compression.
Telling somebody they "oughta have zero-deck for SQUISH" when they just built the engine with stock low squeeze slugs, isn't assistance, so there's that.
Telling the OP that a lot of the small bump in squeeze of the heads got taken away in the thermal conductivity of the Al-U-minimum they're made out of is helpful.
Throwing a basket of coulda/woulda/shoulda's is not.
Telling someone cams were limited to .300-.400" lift because valve springs weren't up to any more is ridiculous, and also not helpful. Guess My stock Slanty with .412" design lift was really living on the edge with it's lame-*** weaker than a stock 'teener valve springs...wheeee!!!!
The OP asked for, & was given good council on the camshaft, advance the one He has or get a smaller one. There are obviously other issues going on with the mill at the moment.
No need to be angry, but You're simply giving bucketloads of info that don't apply to Him, swirls/fast-burns/squishes etc. Great info if He starts over again, and I appreciate the desire to educate, but the valve spring thing....well....